<!DOCTYPE HTML>
<title>test if select() API returns correct attributes</title>
<meta charset="UTF-8">
<link rel="author" title="Koji Tashiro" href="mailto:koji.tashiro@gmail.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/multipage/association-of-controls-and-forms.html#textFieldSelection">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<div id="log"></div>

<script>
  var body = document.getElementsByTagName("body").item(0);
  var dirs = ['forward', 'backward', 'none'];
  var sampleText = "0123456789";

  var createInputElement = function(value) {
    var el = document.createElement("input");
    el.type = "text";
    el.value = value;
    body.appendChild(el);
    return el;
  };

  var createTextareaElement = function(value) {
    var el = document.createElement("textarea");
    el.value = value;
    body.appendChild(el);
    return el;
  };


  test(function() {
    var text = 'a';
    for (var i=0; i<255; i++) {
      var el = createInputElement(text);
      el.select();
      var selectionText = el.value.substring(el.selectionStart, el.selectionEnd);
      assert_equals(selectionText, text, "Selection text mismatched");
      el.parentNode.removeChild(el);
      text += 'a';
    }
  }, "test if selection text is correct for input");


  test(function() {
    var text = 'a';
    for (var i=0; i<255; i++) {
      var el = createTextareaElement(text);
      el.select();
      var selectionText = el.value.substring(el.selectionStart, el.selectionEnd);
      assert_equals(selectionText, text, "Selection text mismatched");
      el.parentNode.removeChild(el);
      text += 'a';
    }
  }, "test if selection text is correct for textarea");


  test(function() {
    var text = 'あ';
    for (var i=0; i<255; i++) {
      var el = createInputElement(text);
      el.select();
      var selectionText = el.value.substring(el.selectionStart, el.selectionEnd);
      assert_equals(selectionText, text, "Selection text mismatched");
      el.parentNode.removeChild(el);
      text += 'あ';
    }
  }, "test if non-ascii selection text is correct for input");


  test(function() {
    var text = 'あ';
    for (var i=0; i<255; i++) {
      var el = createTextareaElement(text);
      el.select();
      var selectionText = el.value.substring(el.selectionStart, el.selectionEnd);
      assert_equals(selectionText, text, "Selection text mismatched");
      el.parentNode.removeChild(el);
      text += 'あ';
    }
  }, "test if non-ascii selection text is correct for textarea");


  test(function() {
    var el = createInputElement(sampleText);
    // If there is no selection, then it must return the offset(in logical order)
    // to the character that immediately follows the text entry cursor.
    assert_equals(el.selectionStart, el.value.length, "SelectionStart offset without selection");
    el.select();
    assert_equals(el.selectionStart, 0, "SelectionStart offset");
    el.parentNode.removeChild(el);
  }, "test SelectionStart offset for input");


  test(function() {
    var el = createTextareaElement(sampleText);
    // If there is no selection, then it must return the offset(in logical order)
    // to the character that immediately follows the text entry cursor.
    assert_equals(el.selectionStart, el.value.length, "SelectionStart offset without selection");
    el.select();
    assert_equals(el.selectionStart, 0, "SelectionStart offset");
    el.parentNode.removeChild(el);
  }, "test SelectionStart offset for textarea");


  test(function() {
    var el = createInputElement(sampleText);
    // If there is no selection, then it must return the offset(in logical order)
    // to the character that immediately follows the text entry cursor.
    assert_equals(el.selectionEnd, el.value.length, "SelectionEnd offset without selection");
    el.select();
    assert_equals(el.selectionEnd, el.value.length, "SelectionEnd offset");
    el.parentNode.removeChild(el);
  }, "test SelectionEnd offset for input");


  test(function() {
    var el = createTextareaElement(sampleText);
    // If there is no selection, then it must return the offset(in logical order)
    // to the character that immediately follows the text entry cursor.
    assert_equals(el.selectionEnd, el.value.length, "SelectionEnd offset without selection");
    el.select();
    assert_equals(el.selectionEnd, el.value.length, "SelectionEnd offset");
    el.parentNode.removeChild(el);
  }, "test SelectionEnd offset for textarea");


  test(function() {
    var el = createInputElement(sampleText);
    assert_in_array(el.selectionDirection, dirs, "SelectionDirection");
    el.select();
    assert_in_array(el.selectionDirection, dirs, "SelectionDirection");
    el.parentNode.removeChild(el);
  }, "test SelectionDirection for input");


  test(function() {
    var el = createInputElement(sampleText);
    assert_in_array(el.selectionDirection, dirs, "SelectionDirection");
    el.select();
    assert_in_array(el.selectionDirection, dirs, "SelectionDirection");
    el.parentNode.removeChild(el);
  }, "test SelectionDirection for textarea");
</script>
